LM2576D2T-ADJR4

Voltage Regulators - DC DC Switching Regulators Overview

The LM2576D2T-ADJR4 is a monolithic integrated circuit from the LM2576 series, designed as a step-down switching regulator (buck converter). It features an adjustable output voltage range of 1.23 V to 37 V with a maximum tolerance of ±4% over line and load conditions. The device guarantees a 3.0 A output current capability and operates with a wide input voltage range. It utilizes a 52 kHz fixed-frequency internal oscillator and requires only four external components for implementation. The component is housed in a surface-mount TO-263 package.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Adjustable output voltage configuration allowing flexible design parameters
• Integrated 52 kHz fixed-frequency internal oscillator for simplified timing
• Built-in thermal shutdown and cycle-by-cycle current limit protection

Voltage Regulators - DC DC Switching Regulators Applications

• Simple high-efficiency step-down (buck) regulators
• Efficient pre-regulators for linear regulators
• On-card switching regulators
• Positive to negative converters (Buck-Boost)
• Power supply for battery chargers

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific suffix 'R4' against official onsemi documentation to confirm reel packaging specifications and moisture sensitivity level. Ensure compatibility with standard TO-263 footprint requirements during procurement planning. Cross-reference the part number with the latest datasheet revision to confirm RoHS compliance status and lead-free package availability before finalizing orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when designing buck converters requiring up to 3.0 A output current with adjustable voltage settings. It is suitable for applications needing high efficiency and minimal external component count. Consider the 52 kHz switching frequency for standard inductor selection. Ensure input voltage ranges align with the specified operational limits for reliable performance across the required temperature range.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LM2576 series of Easy Switcher regulators, which are widely recognized for replacing three-terminal linear regulators. The series offers a robust solution for DC-DC conversion with excellent line and load regulation. The D2T designation indicates the surface-mount TO-263 package variant, providing improved thermal performance compared to through-hole options while maintaining the same electrical characteristics as the broader family.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct pin-compatible replacements within the LM2576 family include other adjustable variants such as LM2576T-ADJ or LM2576HV-ADJ, depending on input voltage requirements. Verify that substitute parts maintain the 3.0 A current rating and 52 kHz switching frequency to ensure circuit stability without redesigning the external passive components.